Came across a product/website that recognized ad-hoc and other various types of workflows: Long duration workflow process with activity suspension. In particular, how can we setup a process in a very short time so that some collaborative work is performed? This work can include collection of information from people, be able to route a document for review and approvals, be able to simply categorize and publish information. Also, the expected skillset to create this workflow should be very minimal.
Needless to say, wiki systems are moving towards this. Twiki is actually well placed to handle many such requirements in organizational settings.